M030 ROW spring rates vs various aftermarket options

[blue2000s]

Originally Posted by mikstew

I have teh CDN (RoW? not sure)) spec m030 and the ride is, as you might say, bloody harsh.

Sure its great for the track, but if you DD, its not that fun.

Choose wisely.

Wheel size?

[brp987]

'01 S on Eibachs before ROW M030 install.

ground to fender: front: 24 3/4 inch, rear: 25 inch

coil wire diameter at bottom:
'01S (stock): 0.514 inch; Eibach: 0.514 inch; ROW M030: 0.545

Apparently, spring rate varies as 4th power of wire diameter, which according to my math makes the row M030 26% stiffer than what was stock on my car.

I'll try to post pics, but this is my first try so it probably won't work.

[brp987]

OK, pics didn't work. Tried to link to google/picassa. Looked at FAQ, read some blah blah, but no instructions on attaching pics, so done for now.

[pothole]

Thanks. I'll repost the images for you:




Looks pretty decked. So do we think the Eibachs as softer than ROW M030? Nice wheels, by the way. What are they?

[blue2000s]

Originally Posted by brp987

'01 S on Eibachs before ROW M030 install.

ground to fender: front: 24 3/4 inch, rear: 25 inch

coil wire diameter at bottom:
'01S (stock): 0.514 inch; Eibach: 0.514 inch; ROW M030: 0.545

Apparently, spring rate varies as 4th power of wire diameter, which according to my math makes the row M030 26% stiffer than what was stock on my car.

I'll try to post pics, but this is my first try so it probably won't work.

Spring rate also depends on spring pitch (coils per inch) when unloaded, spring (coil) diameter, and material, of which there are many. So there are missing puzzle pieces.